Chicago general public wellness officials are advising Lollapalooza goers to examination their prescription drugs just before partaking to make guaranteed they are not laced with fentanyl. 

The Chicago Section of Public Overall health place out a warning a day before the four-working day audio pageant was set to start out in Grant Park. 

"ATTN Chicago & LOLLA Fans," a tweet from CDPH reads. "Fentanyl is a strong opioid that can very easily induce overdose. Test your medicine in advance of you use, carry Narcan, and really don't use by itself. Contact 911 if you suspect somebody is overdosing." 

CDPH explained fentanyl is observed in cocaine, MDMA and other medications – not just heroin. The department also explained Narcan and fentanyl examination strips can be picked up at Chicago general public libraries "in simple-to-accessibility Narcan dispenser kits." 

AMERICA'S FENTANYL Disaster Increasingly Entails CORONERS, Professional medical EXAMINERS AND Much more

Narcan, also acknowledged as Naloxone, is a drug used to enable to reverse indications of an overdose and preserve lives. Opioid overdoses typically involve a drop in blood pressure, slowed coronary heart fee, slowed or stopped respiratory, blue lips and pale pores and skin.

Fentanyl is a synthetic opioid behind a enormous spike in overdose deaths throughout the U.S. in current many years. Just a 2 mg dose is enough to get rid of a person with zero tolerance, whereas 60 mg of heroin is deemed a deadly dose. 

Standard perspective of the crowd on working day just one of the Lollapalooza Songs Pageant. (Image by Rob Grabowski/Invision/WHD)

Chicago by yourself noticed near to 1,300 deadly fentanyl poisonings previous calendar year. The DEA warned final week that fentanyl would nearly assuredly be present at the Lollapalooza festival. 

"You will find heading to be individuals walking about with backpacks at Lollapalooza, that are likely to be promoting supplements that are going to be laced with fentanyl. There is not a doubt in my thoughts," Shane Catone of the Chicago DEA instructed FOX 32. "Lollapalooza is like Christmas for drug traffickers." 

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The once-a-year audio competition starts Thursday and finishes Sunday, July 31. 

WHD News' Andrew Mark Miller contributed to this report.